Peterborough will be without winger Tommy Rowe for the visit of League One leaders Brighton.
Rowe - who has been playing at full-back under Gary Johnson this season - picked up a groin injury at Brentford last weekend and is ruled out.
Seth Nana Ofori-Twumasi is favourite to fill in at left-back as Johnson has everyone else fit.
Record signing Ryan Bennett has fully recovered from illness and Gabriel Zakuani played the full 90 minutes last weekend after an arm injury.
Forward Lee Tomlin is still suspended as he serves the final game of his three-match ban but midfielder James Wesolowski is back from a knee injury as Posh look for a win to cut the gap on Brighton.